The family, along with Christina‘s eight-year-old son Max, celebrated the occasion with a Super Mario Bros. themed birthday party.

Christina dressed up as Mario while Matthew opted for a Luigi costume. Summer looked super cute in her Mario costume as well!

“I get so happy seeing the strong and loving relationship they have, and I know she’s getting the safe environment I never had growing up,” Christina told Us Weekly about the bond that her daughter and fiance have.

Christina also said that Summer is growing up to be “a bit more of a tomboy.”